Koichi Komochi

ORCID: 0009-0003-1242-3895
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About
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Research Areas
  • Renin-Angiotensin System Studies
  • Advanced Electron Microscopy Techniques and Applications
  • Acute Kidney Injury Research
  • RNA and protein synthesis mechanisms
  • Cell Adhesion Molecules Research
  • Muscle and Compartmental Disorders
  • Lipid Membrane Structure and Behavior
  • Caveolin-1 and cellular processes
  • RNA Research and Splicing
  • Hormonal Regulation and Hypertension
  • Ion Transport and Channel Regulation
  • Electrolyte and hormonal disorders
  • Receptor Mechanisms and Signaling
  • Advanced Proteomics Techniques and Applications

Niigata University
2024

Megalin (low-density lipoprotein receptor-related protein 2) is a giant glycoprotein of about 600 kDa, mediating the endocytosis more than 60 ligands, including those proteins, peptides, and drug compounds [S. Goto, M. Hosojima, H. Kabasawa, A. Saito, Int. J. Biochem. Cell Biol. 157 , 106393 (2023)]. It expressed predominantly in renal proximal tubule epithelial cells, as well brain, lungs, eyes, inner ear, thyroid gland, placenta. also known to mediate toxic compounds, particularly that...

10.1073/pnas.2318859121 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2024-05-21

Abstract Hemolysis‐induced acute kidney injury (AKI) is attributed to heme‐mediated proximal tubule epithelial cell (PTEC) and tubular cast formation due intratubular protein condensation. Megalin a multiligand endocytic receptor for proteins, peptides, drugs in PTECs mediates the uptake of free hemoglobin heme‐scavenging α 1 ‐microglobulin. However, understanding how megalin involved development hemolysis‐induced AKI remains elusive. Here, we investigated megalin‐related pathogenesis...

10.1002/path.6284 article EN The Journal of Pathology 2024-05-09

Background: Kidney angiotensin (Ang) II is produced mainly from liver-derived, glomerular-filtered angiotensinogen (AGT). Podocyte injury has been reported to increase the kidney Ang content and induce Na + retention depending on function of megalin, a proximal tubular endocytosis receptor. However, how megalin regulates renal action remains elusive. Methods: We used mass spectrometry-based, parallel reaction-monitoring assay quantitate in plasma, urine, homogenate kidney-specific...

10.1097/hjh.0000000000003555 article EN Journal of Hypertension 2023-09-07
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